ABAP Select data from SAP table BIW_PM_CU_CUNIT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BIW_PM_CU_CUNIT table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to BIW_PM_CU_CUNIT. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the BIW_PM_CU_CUNIT table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_BIW_PM_CU_CUNIT TYPE STANDARD TABLE OF BIW_PM_CU_CUNIT,
      WA_BIW_PM_CU_CUNIT TYPE BIW_PM_CU_CUNIT,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <BIW_PM_CU_CUNIT> TYPE BIW_PM_CU_CUNIT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BIW_PM_CU_CUNIT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BIW_PM_CU_CUNIT
  INTO TABLE IT_BIW_PM_CU_CUNIT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BIW_PM_CU_CUNIT
*  INTO TABLE @DATA(IT_BIW_PM_CU_CUNIT2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_BIW_PM_CU_CUNIT INDEX 1 INTO DATA(WA_BIW_PM_CU_CUNIT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BIW_PM_CU_CUNIT ASSIGNING <BIW_PM_CU_CUNIT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BIW_PM_CU_CUNIT>-CU_ID = 1.
<BIW_PM_CU_CUNIT>-CUTYP = 1.
<BIW_PM_CU_CUNIT>-STDNR = 1.
<BIW_PM_CU_CUNIT>-MEINS = 1.
<BIW_PM_CU_CUNIT>-OBJNR = 1.

ENDLOOP.

LOOP AT IT_BIW_PM_CU_CUNIT INTO WA_BIW_PM_CU_CUNIT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BIW_PM_CU_CUNIT-BEGRU, sy-vline,
  WA_BIW_PM_CU_CUNIT-DATAB, sy-vline,
  WA_BIW_PM_CU_CUNIT-DATBI, sy-vline,
  WA_BIW_PM_CU_CUNIT-CU_BOM, sy-vline,
  WA_BIW_PM_CU_CUNIT-EQFNR, sy-vline,
  WA_BIW_PM_CU_CUNIT-EQUNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BIW_PM_CU_CUNIT you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_BIW_PM_CU_CUNIT TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_BIW_PM_CU_CUNIT INTO WA_BIW_PM_CU_CUNIT.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit MATN1, internal->external for field CU_ID
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_BIW_PM_CU_CUNIT-CU_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BIW_PM_CU_CUNIT-CU_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field STDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BIW_PM_CU_CUNIT-STDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BIW_PM_CU_CUNIT-STDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_BIW_PM_CU_CUNIT-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BIW_PM_CU_CUNIT-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BIW_PM_CU_CUNIT-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BIW_PM_CU_CUNIT-EQUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TPLNR, internal->external for field TPLNR
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_BIW_PM_CU_CUNIT-TPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BIW_PM_CU_CUNIT-TPLNR.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_BIW_PM_CU_CUNIT_STR, 
CU_ID TYPE STRING,
CUTYP TYPE STRING,
STDNR TYPE STRING,
MEINS TYPE STRING,
OBJNR TYPE STRING,
BEGRU TYPE STRING,
DATAB TYPE STRING,
DATBI TYPE STRING,
CU_BOM TYPE STRING,
EQFNR TYPE STRING,
EQUNR TYPE STRING,
TPLNR TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
BZGSOBJTYP TYPE STRING,
BZGSOBJ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BIW_PM_CU_CUNIT_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_BIW_PM_CU_CUNIT_STR-CU_ID sy-vline 
WA_BIW_PM_CU_CUNIT_STR-CUTYP sy-vline 
WA_BIW_PM_CU_CUNIT_STR-STDNR sy-vline 
WA_BIW_PM_CU_CUNIT_STR-MEINS sy-vline 
WA_BIW_PM_CU_CUNIT_STR-OBJNR sy-vline 
WA_BIW_PM_CU_CUNIT_STR-BEGRU sy-vline 
WA_BIW_PM_CU_CUNIT_STR-DATAB sy-vline 
WA_BIW_PM_CU_CUNIT_STR-DATBI sy-vline 
WA_BIW_PM_CU_CUNIT_STR-CU_BOM sy-vline 
WA_BIW_PM_CU_CUNIT_STR-EQFNR sy-vline 
WA_BIW_PM_CU_CUNIT_STR-EQUNR sy-vline 
WA_BIW_PM_CU_CUNIT_STR-TPLNR sy-vline 
WA_BIW_PM_CU_CUNIT_STR-ERDAT sy-vline 
WA_BIW_PM_CU_CUNIT_STR-ERNAM sy-vline 
WA_BIW_PM_CU_CUNIT_STR-AEDAT sy-vline 
WA_BIW_PM_CU_CUNIT_STR-AENAM sy-vline 
WA_BIW_PM_CU_CUNIT_STR-BZGSOBJTYP sy-vline 
WA_BIW_PM_CU_CUNIT_STR-BZGSOBJ sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.